Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao va loi snippets" » "nano va loi snippets", "tao va loi snippets", "cao va loi snippets", "nao van loi snippets", "nao va doi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nao va loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao va loi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao va loi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao va loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.